123120113311 has 16 divisors (see below), whose sum is σ = 132839400960. Its totient is φ = 113436552960.

The previous prime is 123120113287. The next prime is 123120113317. The reversal of 123120113311 is 113311021321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123120113311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120113317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17329986 + ... + 17337088.

It is an arithmetic number, because the mean of its divisors is an integer number (8302462560).

Almost surely, 2^123120113311 is an apocalyptic number.

123120113311 is a deficient number, since it is larger than the sum of its proper divisors (9719287649).

123120113311 is a wasteful number, since it uses less digits than its factorization.

123120113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123120113311 its reverse (113311021321), we get a palindrome (236431134632).

The spelling of 123120113311 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred thirteen thousand, three hundred eleven".